孤岛油田西区北馆陶组上段3-6砂层组沉积微相分析  

Analysis of sedimentary microfacies of sand units 3-6 in the upper Guangtao Fm in the northern part of west block, Gudao oilfield

作　　者：代黎明[1] 郭建华[1] 刘辰生[1] 旷理雄[1] 

机构地区：[1]中南大学地学与环境工程学院,湖南长沙410083

出　　处：《河南石油》2006年第1期14-16,共3页Henan Petroleum

摘　　要：根据岩心观察,并结合岩性粒度分析、显微薄片、测井资料数字处理结果等资料,从岩性、结构、沉积构造等方面入手,对孤岛油田西区北部5口取心井进行了重点剖析,对其馆陶组上段3-6砂层组沉积微相进行了研究。认为本区研究层段属曲流河沉积,将河流相划分为河床亚相、堤岸亚相、河漫滩亚相和废弃河道亚相,细分为河床滞留沉积、边滩、天然堤、决口扇和泛滥平原五种微相。Based on core observation and in combination with a-nalysis of grain sizes, microscopic section, digital processing results of well logging data, the 5 cored wells in the northern part of the west block in Gudao oilfield are analyzed in respects of lithology, architecture and sedimentary structure, and the sedimentary microfacies of the sand units 3 - 6 in the upper Guantao Fm are studied. It is believed that the interval of interest in this area is of meandering river deposits. The fluvial facies is divided into riverbed, bank, overbank and abandoned channel subfacies, which are further divided into riverbed lag deposits, point bar, natural levee, crevasse-splay and flood plain microfacies.

关 键 词：孤岛油田 馆陶组 曲流河 沉积微相 沉积特征 

分 类 号：TE111.3[石油与天然气工程—油气勘探]